CVE-2019-6657 Cross-site scripting in BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, FPS, GTM, Link Controller, PEM, WebAccelerator)

Medium 6.1 Published 1 Nov 2019 Updated 4 Aug 2024

Reflected XSS in BIG-IP TMUI allows attackers to execute scripts in user browsers, potentially compromising administrative sessions.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2019-6657?

CVE-2019-6657 is a medium-severity cross-site scripting vulnerability in F5 Big-Ip Access Policy Manager, published on 1 Nov 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

On BIG-IP 13.1.0-13.1.3.1, 12.1.0-12.1.5, and 11.5.2-11.6.5.1, a reflected cross-site scripting (XSS) vulnerability exists in an undisclosed page of the BIG-IP Traffic Management User Interface (TMUI), also known as the BIG-IP Configuration utility.

Weakness: CWE-79

Which versions are affected by CVE-2019-6657?

It affects 13 products.

Products include F5 Big-Ip Access Policy Manager, F5 Big-Ip Advanced Firewall Manager, F5 Big-Ip Analytics, F5 Big-Ip Application Acceleration Manager, F5 Big-Ip Application Security Manager, F5 Big-Ip Domain Name System and 7 more.

How do I fix CVE-2019-6657?

No fix has been published for CVE-2019-6657 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2019-6657 being exploited?

There is no known exploitation of CVE-2019-6657 in the wild and no public exploit code.

All F5 Big-Ip Access Policy Manager vulnerabilities

Sources

Also known as GHSA-2v8j-mcmc-x57c.